The effects of vibration field on crystal structures and orientation of isotactic polypropylene injection samples

2011 ◽  
Vol 68 (1) ◽  
pp. 239-251 ◽  
Author(s):  
Jie Zhang ◽  
Hong Liu ◽  
Lei Zhang ◽  
Qixiong Zhou ◽  
Xueqin Gao ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Isotactic Polypropylene ◽  
Vibration Field

A novel crystal morphology of isotactic polypropylene induced by pressure vibration field: α Banded spherulite

2015 ◽  
Vol 153 ◽  
pp. 66-69 ◽  
Author(s):  
Chao Xia ◽  
Hailan Du ◽  
Feifei Wang ◽  
Renxi La ◽  
Dashan Mi ◽  
...  
Keyword(s):  
Isotactic Polypropylene ◽  
Crystal Morphology ◽  
Banded Spherulite ◽  
Vibration Field

The influence of crystal structures of nucleating agents on the crystallization behaviors of isotactic polypropylene

2006 ◽  
Vol 285 (1) ◽  
pp. 11-17 ◽  
Author(s):  
Wei-Min Hou ◽  
Gang Liu ◽  
Jian-Jun Zhou ◽  
Xia Gao ◽  
Yan Li ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Isotactic Polypropylene ◽  
Nucleating Agents ◽  
Crystallization Behaviors

scholarly journals ChiralAnsaMetallocenes with Cp Ring-Fused to Thiophenes and Pyrroles:  Syntheses, Crystal Structures, and Isotactic Polypropylene Catalysts  [J.Am. Chem. Soc.2001,123, 4763−4773]. 

2001 ◽  
Vol 123 (28) ◽  
pp. 6964-6964 ◽  
Author(s):  
John A. Ewen ◽  
Michael J. Elder ◽  
Robert L. Jones ◽  
Arnold L. Rheingold ◽  
Louise M. Liable-Sands ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Isotactic Polypropylene

ChiralAnsaMetallocenes with Cp Ring-Fused to Thiophenes and Pyrroles:  Syntheses, Crystal Structures, and Isotactic Polypropylene Catalysts

2001 ◽  
Vol 123 (20) ◽  
pp. 4763-4773 ◽  
Author(s):  
John A. Ewen ◽  
Michael J. Elder ◽  
Robert L. Jones ◽  
Arnold L. Rheingold ◽  
Louise M. Liable-Sands ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Isotactic Polypropylene

Pollutant Identification by Selected Area Electron Diffraction

1974 ◽  
Vol 32 ◽  
pp. 532-533
Author(s):  
R. E. Ferrell ◽  
G. G. Paulson ◽  
C. W. Walker
Keyword(s):  
Thermal Treatment ◽  
Electron Diffraction ◽  
Sample Preparation ◽  
Crystal Structures ◽  
Water Samples ◽  
Environmental Samples ◽  
Short Review ◽  
Selected Area Electron Diffraction ◽  
Multiple Component

Selected area electron diffraction (SAD) has been used successfully to determine crystal structures, identify traces of minerals in rocks, and characterize the phases formed during thermal treatment of micron-sized particles. There is an increased interest in the method because it has the potential capability of identifying micron-sized pollutants in air and water samples. This paper is a short review of the theory behind SAD and a discussion of the sample preparation employed for the analysis of multiple component environmental samples.

The Imaging of Crystal Structures and Crystal Defects

1978 ◽  
Vol 36 (3) ◽  
pp. 207-217
Author(s):  
J.M. Cowley
Keyword(s):  
Electron Microscope ◽  
Crystal Structures ◽  
Phase Contrast ◽  
Crystal Defects ◽  
Atom Density ◽  
Lack Of Information ◽  
Spatial Frequencies

The problem of "understandinq" electron microscope imaqes becomes more acute as the resolution is improved. The naive interpretation of an imaqe as representinq the projection of an atom density becomes less and less appropriate. We are increasinqly forced to face the complexities of coherent imaqinq of what are essentially phase objects. Most electron microscopists are now aware that, for very thin weakly scatterinq objects such as thin unstained bioloqical specimens, hiqh resolution imaqes are best obtained near the optimum defocus, as prescribed by Scherzer, where the phase contrast imaqe qives a qood representation of the projected potential, apart from a lack of information on the lower spatial frequencies. But phase contrast imaqinq is never simple except in idealized limitinq cases.

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